Gas-assisted Injection Molding Equipment
The gas-assisted equipment includes a gas-assisted control part and a nitrogen generator, it is special and seperate system of the injection molding machine, and its only interface with the injection molding machine is the injection signal connection line. After the injection molding machine transmits an injection signal injection start or screw position to the gas-assisted control unit, it starts a gas injection process, and when the next injection process starts, another injection signal is given, and another cycle starts and so on. The gas used in gas-assisted injection molding must be an inert gas (usually nitrogen), the maximum pressure of the gas is 35MPa, and the maximum pressure of the gas can be up to 70MPa, and the nitrogen purity is ≥98%. The gas-assisted control part is a device that controls the gas injection time and pressure, it has a multi-group gas circuit design that can control the gas-assisted production of multiple injection molding machines at the same time, the gas-assisted control part has a gas recovery function to reduce gas as much as possible consumption.
The difference between full shot and short shot of gas-assisted injection molding
Apr 13, 2022Gas-assisted injection molding can be divided into short shot and full shot. Short shot The short shot method is shown in picture 1, it is suitable for thick-walled plastic parts with low mold filling...viewThe air trapping position in cavity and exhaust method
Mar 2, 2022The air trapping in cavity is usually in the following places: 1. Thin-wall structure cavity, the end of melt flow; 2. The junction of two or more melts; 3. The last area where the melt in the cavity...viewReasons for making the exhaust system of the injection mold
Feb 28, 2022The gas in the injection mold includes not only the air in the cavity, but also the air in the gate and the decomposition gas generated by the plastic melt, and the steam which caused by plastic in...viewPlastic injection mold runner system design
Jan 16, 2022The gate is the connecting part between the runner and the cavity, and is also the end part of the injection mold gating system, the molten plastic enters the cavity and core side through the gate...viewKey points of gas-assisted injection molding process
Apr 20, 2022Gas injection parameters The gas-assisted control part is a device that controls the gas pressure in each stage, the gas-assisted parameters have only two values: gas injection time (seconds) and gas...viewThe main design points of the design of the plastic mold pouring system
Jan 11, 2022The main runner is the part where the molten plastic first passes when it is sprayed from the injection nozzle, and it is coaxial with the injection nozzle, because of repeated contact and collision...view